What are the tasks of the US Sixth Fleet centered in the Mediterranean sea?
The US Sixth Fleet, which has four guided missile destroyers - the USS Gravely, USS Mahan, USS Barry, and USS Ramage - operates in the eastern Mediterranean Sea. The US has been using this fleet in its different attacks since 63 years.

Each of these 500-foot, integrated propulsion warships is stuffed with more than 90 Surface-to-Air missiles, ASROC anti-submarine missiles, and Tomahawk and Harpoon cruise missiles. They also sport two 5-inch guns, a pair of M242 Bushmaster autocannons, a host of Mk-50 torpedoes, and later builds carry a pair of MH-60R LAMPS III helicopters as well.

Also, the USS Florida and USS Georgia Ohio-class SSGN cruise missile submarines are no stranger to recent Mideast incursions. The Florida fired nearly a hundred cruise missiles during the US intervention in Libya during the downfall of Moamar Ghaddafi. Each submarine is equipped with 154 Tomahawk cruise missiles.